Two New Pentacyclic Triterpenoids, an Alkaloid and a Long-chain Fatty Acid from Albizia Coriaria (Welw ex. Oliver)


  • Timothy Omara Department für Chemie, Universität für Bodenkultur Wien, Vienna Gregor-Mendel-Straße 331180 Vienna, Austria.
  • Ambrose Kiprop Africa Center of Excellence II in Phytochemicals, Textile and Renewable Energy (ACE II PTRE), Moi University, P. O. Box 3900-30100, Eldoret, Kenya
  • Viola Kosgei Africa Center of Excellence II in Phytochemicals, Textile and Renewable Energy (ACE II PTRE), Moi University, P. O. Box 3900-30100, Eldoret, Kenya



Albizia, triterpenes, pterin-6-carboxylic acid, oleanolic acid, undecanol


Herein, we report the occurrence of four new compounds in ethanolic extract of Albizia coriaria Welw ex. Oliver leaves along with other compounds previously reported in this species. The compounds were isolated and characterized using column chromatography, Fourier Transform Infrared (FTIR) and gas chromatography/mass spectrometry. FTIR spectrum of the extract showed phenolic OH stretching (3362.30 cm-1), C=O (1660.08 cm-1), CO stretching (1369.46 cm-1 and 1319.00 cm-1) and CN stretch (1072.44 cm-1) which confirmed the presence of alcohols, carboxylic acids and nitrogen-containing compounds. Oleanolic acid (1), oleanolic acid acetate (2), pterin-6-carboxylic acid (3), undecanol (4), betulinic acid (5), betulin (6) and benzyl alcohol (7) were tentatively identified in the extract. Compounds 1-4 are being reported for the first time in Albizia coriaria.

Author Biographies

Timothy Omara, Department für Chemie, Universität für Bodenkultur Wien, Vienna Gregor-Mendel-Straße 331180 Vienna, Austria.

PhD Scholar, Department für Chemie, Universität für Bodenkultur Wien, Vienna, Austria

Ambrose Kiprop, Africa Center of Excellence II in Phytochemicals, Textile and Renewable Energy (ACE II PTRE), Moi University, P. O. Box 3900-30100, Eldoret, Kenya

Professor of Chemistry and Dean, School of Sciences and Aerospace Studies

Viola Kosgei, Africa Center of Excellence II in Phytochemicals, Textile and Renewable Energy (ACE II PTRE), Moi University, P. O. Box 3900-30100, Eldoret, Kenya

Chair of Chemistry and Biochemistry Department


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